diff --git a/library/src/main/ets/ImageKnife.ets b/library/src/main/ets/ImageKnife.ets
index 10329c4..3888631 100644
--- a/library/src/main/ets/ImageKnife.ets
+++ b/library/src/main/ets/ImageKnife.ets
@@ -20,7 +20,6 @@ import { FileCache } from './utils/FileCache';
 import { ImageKnifeDispatcher } from './ImageKnifeDispatcher';
 import { IEngineKey } from './key/IEngineKey';
 import { HeaderOptions, ImageKnifeOption } from './ImageKnifeOption';
-import { DefaultEngineKey } from './key/DefaultEngineKey';
 import { FileTypeUtil } from './utils/FileTypeUtil';
 import { util } from '@kit.ArkTS';
 import { image } from '@kit.ImageKit';
@@ -37,8 +36,8 @@ export class ImageKnife {
   private dispatcher: ImageKnifeDispatcher = new ImageKnifeDispatcher()
   // 配置全局是否在子线程加载图片请求
   private _isRequestInSubThread: boolean = true;
-
-  headerMap: Map<string, Object> = new Map<string, Object>(); //定义全局map
+  //定义全局网络请求header map
+  headerMap: Map<string, Object> = new Map<string, Object>();
 
   public static getInstance(): ImageKnife {
     if (!ImageKnife.instance) {
@@ -58,12 +57,12 @@ export class ImageKnife {
     return this._isRequestInSubThread;
   }
 
-
   /**
-   * 初始化文件缓存
+   * 初始化文件缓存个数，大小，以及路径
    * @param context 上下文
    * @param size 缓存数量
    * @param memory 内存大小
+   * @param path 文件目录
    */
   async initFileCache(context: Context, size: number = 256, memory: number = 256 * 1024 * 1024,path?: string) {
     this.fileCache = new FileCache(context, size, memory)
@@ -75,7 +74,7 @@ export class ImageKnife {
   }
 
   /**
-   * 判断文件缓存是否初始化
+   * 判断文件缓存是否已完成初始化
    * @returns 是否初始化
    */
   public isFileCacheInit(): boolean {
@@ -83,16 +82,16 @@ export class ImageKnife {
   }
 
   /**
-   * 全局添加单个请求头
+   * 全局添加单个请求头header
    * @param key 请求头属性
    * @param value 请求头值
    */
   addHeader(key: string, value: Object) {
-    this.headerMap.set(key, value);
+    this.headerMap.set(key, value)
   }
 
   /**
-   * 全局设置请求头调用方法
+   * 全局设置请求头header
    * @param options 请求头数组
    */
   serHeaderOptions(options: Array<HeaderOptions>) {
@@ -102,11 +101,11 @@ export class ImageKnife {
   }
 
   /**
-   * 删除单个请求头属性
+   * 删除单个请求头header
    * @param key 请求头属性
    */
   deleteHeader(key: string) {
-    this.headerMap.delete(key);
+    this.headerMap.delete(key)
   }
 
   /**
@@ -114,7 +113,7 @@ export class ImageKnife {
    * @param newMemoryCache 自定义内存缓存
    */
   initMemoryCache(newMemoryCache: IMemoryCache): void {
-    this.memoryCache
+    this.memoryCache = newMemoryCache
   }
 
   /**
@@ -123,9 +122,11 @@ export class ImageKnife {
   removeAllMemoryCache(): void {
     this.memoryCache.removeAll()
   }
-  /*
+
+  /**
    * 清除指定内存缓存
-   * */
+   * @param url 待清除的url路径或ImageKnifeOption
+   */
   removeMemoryCache(url: string | ImageKnifeOption) {
     let imageKnifeOption = new ImageKnifeOption();
     if (typeof url == 'string') {
@@ -137,33 +138,9 @@ export class ImageKnife {
     this.memoryCache.remove(key);
   }
 
-  loadFromMemoryCache(key: string): ImageKnifeData | undefined {
-    if (key !== "") {
-      return this.memoryCache.get(key)
-    }
-    return undefined
-  }
-
-  saveMemoryCache(key: string, data: ImageKnifeData): void {
-    if (key !== "") {
-      this.memoryCache.put(key, data)
-    }
-  }
-
-  loadFromFileCache(key: string): ArrayBuffer | undefined {
-    return this.fileCache?.get(key)
-  }
-
-  saveFileCache(key: string, data: ArrayBuffer): void {
-    this.fileCache?.put(key, data)
-  }
-
-  getFileCache(): FileCache {
-    return this.fileCache as FileCache
-  }
 
   /**
-   * 预加载到文件缓存
+   * 预加载图片到文件缓存
    * @param loadSrc 图片地址url
    * @returns 返回文件缓存路径
    */
@@ -233,7 +210,7 @@ export class ImageKnife {
   }
 
   /**
-   *
+   * 预加载缓存（用于外部已获取pixelmap，需要加入imageknife缓存的场景）
    * @param url  图片地址url
    * @param pixelMap 图片
    * @param cacheType 缓存策略
@@ -258,6 +235,74 @@ export class ImageKnife {
     }
   }
 
+  /**
+   * 清除所有文件缓存
+   * @returns
+   */
+  async removeAllFileCache(): Promise<void> {
+    if (this.fileCache !== undefined) {
+      await this.fileCache.removeAll()
+    }
+  }
+  /*
+   * 清除指定文件缓存
+   * */
+  removeFileCache(url: string | ImageKnifeOption) {
+    let imageKnifeOption: ImageKnifeOption;
+    if (url instanceof ImageKnifeOption) {
+      imageKnifeOption = url;
+    } else {
+      imageKnifeOption = {
+        loadSrc: url
+      };
+    }
+    let key = this.getEngineKeyImpl().generateFileKey(imageKnifeOption.loadSrc, imageKnifeOption.signature);
+    if (this.fileCache !== undefined) {
+      this.fileCache.remove(key);
+    }
+  }
+
+  /**
+   * 设置taskpool默认并发数量
+   * @param concurrency 默认并发数量，默认为8
+   */
+  setMaxRequests(concurrency: number): void {
+    this.dispatcher.setMaxRequests(concurrency)
+  }
+
+  getFileCacheByFile(context: Context, key: string): ArrayBuffer | undefined {
+    if (this.fileCache !== undefined) {
+      return FileCache.getFileCacheByFile(context, key)
+    }
+    return undefined
+  }
+
+  loadFromMemoryCache(key: string): ImageKnifeData | undefined {
+    if (key !== "") {
+      return this.memoryCache.get(key)
+    }
+    return undefined
+  }
+
+  saveMemoryCache(key: string, data: ImageKnifeData): void {
+    if (key !== "") {
+      this.memoryCache.put(key, data)
+    }
+  }
+
+  loadFromFileCache(key: string): ArrayBuffer | undefined {
+    return this.fileCache?.get(key)
+  }
+
+  saveFileCache(key: string, data: ArrayBuffer): void {
+    this.fileCache?.put(key, data)
+  }
+
+  getFileCache(): FileCache {
+    return this.fileCache as FileCache
+  }
+
+
   private pixelMapToArrayBuffer(pixelMap: PixelMap): ArrayBuffer {
     let imageInfo = pixelMap.getImageInfoSync();
     let readBuffer: ArrayBuffer = new ArrayBuffer(imageInfo.size.height * imageInfo.size.width * 4);
@@ -308,33 +353,6 @@ export class ImageKnife {
     }
   }
 
-  /**
-   * 清除所有文件缓存
-   * @returns
-   */
-  async removeAllFileCache(): Promise<void> {
-    if (this.fileCache !== undefined) {
-      await this.fileCache.removeAll()
-    }
-  }
-  /*
-   * 清除指定文件缓存
-   * */
-  removeFileCache(url: string | ImageKnifeOption) {
-    let imageKnifeOption: ImageKnifeOption;
-    if (url instanceof ImageKnifeOption) {
-      imageKnifeOption = url;
-    } else {
-      imageKnifeOption = {
-        loadSrc: url
-      };
-    }
-    let key = this.getEngineKeyImpl().generateFileKey(imageKnifeOption.loadSrc, imageKnifeOption.signature);
-    if (this.fileCache !== undefined) {
-      this.fileCache.remove(key);
-    }
-  }
-
   saveWithoutWriteFile(key: string, bufferSize: number): void {
     this.fileCache?.putWithoutWriteFile(key, bufferSize)
   }
@@ -346,13 +364,6 @@ export class ImageKnife {
     return false
   }
 
-  getFileCacheByFile(context: Context, key: string): ArrayBuffer | undefined {
-    if (this.fileCache !== undefined) {
-      return FileCache.getFileCacheByFile(context, key)
-    }
-    return undefined
-  }
-
   async execute(request: ImageKnifeRequest): Promise<void> {
     LogUtil.log("ImageKnife_DataTime_execute.start:"+request.imageKnifeOption.loadSrc)
     if (this.headerMap.size > 0) {
@@ -362,10 +373,6 @@ export class ImageKnife {
     LogUtil.log("ImageKnife_DataTime_execute.end:"+request.imageKnifeOption.loadSrc)
   }
 
-  setMaxRequests(concurrency: number): void {
-    this.dispatcher.setMaxRequests(concurrency)
-  }
-
   setEngineKeyImpl(impl: IEngineKey): void {
     this.dispatcher.setEngineKeyImpl(impl);
   }
diff --git a/library/src/main/ets/utils/FileCache.ets b/library/src/main/ets/utils/FileCache.ets
index dad888e..4a5fbff 100644
--- a/library/src/main/ets/utils/FileCache.ets
+++ b/library/src/main/ets/utils/FileCache.ets
@@ -60,8 +60,12 @@ export class FileCache {
     if (this.isInited) {
       return
     }
-    FileCache.CACHE_FOLDER = path
-    this.path = this.context?.cacheDir + FileUtils.SEPARATOR + FileCache.CACHE_FOLDER + FileUtils.SEPARATOR
+    if (this.context && path.startsWith(this.context.cacheDir) === false) {
+      this.path = path
+    } else {
+      FileCache.CACHE_FOLDER = path
+      this.path = this.context?.cacheDir + FileUtils.SEPARATOR + FileCache.CACHE_FOLDER + FileUtils.SEPARATOR
+    }
     await FileUtils.getInstance().createFolder(this.path)
     // 遍历缓存目录下的文件，按照时间顺序加入缓存
     let filenames: string[] = await FileUtils.getInstance().ListFile(this.path)